# Kalman Signal

> Stock trend analysis and trading signals from Yahoo Finance. (iPhone/iPad app by IGOR VLASOV.)

- Source: https://appshunter.io/ios/app/kalman-signal/id930965796 (this page in markdown: same URL + `.md`)
- Developer: [IGOR VLASOV](https://appshunter.io/developer/423427634)
- Category: Finance, Business
- Price: Free with in-app purchases
- Rating: 3.88/5 from 8 App Store ratings · 8 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 7 MB
- Languages: English
- Released: 2014-11-06
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/kalman-signal/id930965796/reviews.md

## What is Kalman Signal?

KalmanSignal gives you the real, underlying non-redrawing trends and unchanged signals of all the stocks showing in Yahoo Finance. Save stock symbols in groups, adjust trend dates, get buy and sell signals, compare with other indicators and more. Everything you need to keep an eye on your portfolio is here. Click “...More” to learn why you should download this App today!

You’ve invested a lot of your savings in an attempt to speed up your retirement date. Although you’re not a professional trader, you like to watch the market and make your own decisions about your portfolio. You have a goal and a target and you plan to handle the buying and selling of stocks yourself.
Thanks to KalmanSignal, you can keep an eye on those important trends that mean the difference between profit and loss. If a stock is listed in Yahoo Finance, you can quickly and easily see its daily, weekly, monthly or intraday chart. There is absolutely no lag when compared with moving average trends. Calman filter effectively removes random fluctuations to provide the real picture of how a stock is performing and it is almost not redraw, and Chebyshev polinomials are used to draw long trend channel lines.
When you download KalmanSignal, you’re putting an innovative trending tool on your iPhone, iPad or iPod touch. No matter where you are, you’ll have access to the data that matters most – buy and sell signals and trend comparisons. You can organize your stock symbols into groups and adjust trend dates, too.
The app’s data and trend line comes from Yahoo Finance, so any stock listed there is accessible for trending in KalmanSignal. Every five minutes, you get up-to-date data in intraday mode. For daily, weekly or monthly views, the information is refreshed hourly and at midnight. You’ll always have a pulse on current trends.
If you’re the cautious type, or simply want to kick the KalmanSignal tires before purchasing, go ahead and download it for free! You wil have 30 days to make KalmanSignal purchase decision.
Have a look at some of the features you get in KalmanSignal:
* Puts an innovative trending tool in the palm of your hand
* Uses Kalman Filter to create short trend line and Chebyshev polynomials for long trend pipe against Yahoo Finance & realtime GoogleFinance if available
* Get daily, weekly, monthly or intraday stock charts
* Kalman filter optimally removes random fluctuations to provide the real trends
* Complete absence of lag when compared with moving average trends
* Includes buy and sell signals
* Compare trends with classical MA and Bollinger Bands, Parabolic SAR and MACD, RSI, Chaikin and more (check manual appendix #2 at the support site for more details);
* Save stock symbols in a portfolio by groups
* Ability to adjust trend dates
* Ability to draw custom lines and create custom signals
* Stocks and data sourced from Yahoo Finance website; realtime data sourced from GoogleFinance if available
* Accessing web requires a data connection
* Try KalmanSignal for free during 30 days for it's sneak peak.
So are you as informed about your stocks as you should be? Are you buying and selling at the best times? Find out for sure by downloading KalmanSignal now. Don’t lose another day of gains.

## Key features

- Non-redrawing stock trends
- Buy and sell signals
- Stock symbol grouping
- Adjustable trend dates
- Trend comparisons with indicators
- Real-time intraday data

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlimited Usage | $7.99 | one-time |
| Fourier Predictor | $1.99 | one-time |
| Ichimoku indicator | $0.99 | one-time |


## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/kalman-signal/id930965796/reviews.md

### 1/5 — Not working!

*2023-05-28*

Purchased the app in 2021 and enjoyed the analysis however the app stopped working in realtime. Now the app fails to even run.

### 1/5 — Don’t waste your time

*2020-03-26, version 1.3.5*

This app repaints signals just like most other garbage signal providers. If the signal is wrong, it magically disappears like it never happened.

### 5/5 — The Tool Every Trader Needs!

*2018-12-06, version 1.3.4*

This app is great! It can draw almost every trend line for you instantly! It can save you so much time! There is no other app that has the settings and abilities like this app has. These tools are some of the most powerful that I have seen on any other app!
I really wish that the resolution was updated for the iPhone X and newer iPhones, but this app is still the app you need to become successful!

### 4/5 — BETTER TRADING

*2015-11-10, version 1.0.7*

I had heard about the Kalman  filter (a fancy moving average) from electronics experience, but when I emailed Igor about the Heiken Ashi trend indicating technique he immediately incorporated it into the app and I had to buy the app.  It gives very good signals in the weekly bar mode if you are doing more casual trading.  Also, the Laguerre algorythm if tuned right can give very near the same signals Heiken Ashi.  In the custom signal a 5 and 34 simple moving average will, I heard, give an Elliot wave type response.

### 5/5 — Excellent app

*2015-03-10, version 1.0.4*

Thanks for making excellent app with highly accurate signal blow my mind away,I am doing trading for 15 years but this app will give you real stock. Buy and sell signal,highly recommended and thanks for developer to make this happen

### 1/5 — Crashes..

*2015-02-01, version 1.0.3*

Can't seem to get it to work.  At all. Non functioning.

### 4/5 — Purchased

*2014-11-25, version 1.0.2*

Thanks for upgrade/bug fix, Igor.  I have now purchased app.

### 5/5 — One of the BEST forecasters I have ever seen

*2014-11-17, version 1.0*

Igor-

You continue the trend of being one of the best mathemeticians and forecasters of the market out there.

It is amazing to me that, as an individual,  you seem to outperform the large multi-nationals.  Makes me glad you are on "our side" and not a hacker, given your extraordinary skills !!!

Thank you for this addition to your portfolio of solutions.  I look forward to using it productively.

I also hope that things stabilize in the Ukrain and life become less uncertain !!!  

 [:-)}

## Frequently asked questions about Kalman Signal

### What kind of stock data does Kalman Signal use?

Kalman Signal sources its stock data and trend lines from Yahoo Finance. For real-time intraday data, it also utilizes Google Finance if available. This ensures comprehensive and up-to-date information for your portfolio.

### How frequently is the data updated in Kalman Signal?

In intraday mode, Kalman Signal provides data updates every five minutes. For daily, weekly, or monthly views, the information is refreshed hourly and again at midnight, ensuring you always have a pulse on current trends.

### Does Kalman Signal offer a free trial?

Yes, you can download Kalman Signal for free and have 30 days to evaluate its features before making a purchase decision. This allows you to explore its trending tools and signals without immediate commitment.

### What devices is Kalman Signal compatible with?

Kalman Signal is designed for Apple devices, including iPhone, iPad, and iPod touch. It leverages these platforms to put an innovative trending tool directly in the palm of your hand.

### How does Kalman Signal's trend analysis differ from moving averages?

Kalman Signal uses a Kalman filter to remove random fluctuations and provide real trends with virtually no lag compared to moving average trends. It also employs Chebyshev polynomials for long trend channel lines, offering a clearer picture of stock performance.

### Can I compare Kalman Signal's trends with other technical indicators?

Yes, Kalman Signal allows you to compare its trends with classical indicators such as Moving Average (MA), Bollinger Bands, Parabolic SAR, MACD, RSI, and Chaikin. More details can be found in the app's manual appendix.

### What is the age rating for Kalman Signal?

Kalman Signal has an age rating of 4+, making it suitable for a wide range of users interested in financial market analysis.

### How does Kalman Signal handle security for financial data?

While Kalman Signal accesses data from Yahoo Finance and Google Finance, it does not store sensitive personal financial information. Users connect to these external data sources, and the app focuses on presenting trend and signal data.

## Version history (last 1 release)

### 1.3.13 — 2021-03-06

As a new season greetings New hourly intraday timeframe is added to YahooFinance data feed!

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## More apps by IGOR VLASOV

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- [ChebyshevTrendPro - FOREX ed.](https://appshunter.io/ios/app/chebyshevtrendpro-forex-ed/id542612322)
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- [Renko Charts - Yahoo ed.](https://appshunter.io/ios/app/renko-charts-yahoo-ed/id562245297)

All apps by IGOR VLASOV: https://appshunter.io/developer/423427634

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*